TAPAS CHATTERJEE vs ASSISTANT CONTROLLER OF PATENTS AND DESIGNS & ANR.

Judgment text excerpt

$~ * IN THE HIGH COURT OF DELHI AT NEW DELHI Reserved on: 3 April 2025 Pronounced on: 6 October 2025 + LPA 836/2023, CM APPL. 66718/2023, CM APPL. 66719/2023, CM APPL. 66720/2023, CM APPL. 66721/2023 & CM APPL. 66722/2023 TAPAS CHATTERJEE .....Appellant Through: Mr. Pravin Anand, Ms. Prachi Agarwal, Ms. Arpita Kulshrestha and Ms. Elisha Sinha, Advs. versus ASSISTANT CONTROLLER OF PATENTS AND DESIGNS & ANR. .....Respondents Through: Mr. Vijay Joshi, Mr. Kuldeep Singh and Mr. Shubham Chaturvedi, Advs. for R-1 Ms. Vindhya S. Mani, Mr. Ritvik Sharma, Ms. Naina Gupta, Mr. Bhuavan Malhotra, Ms. Surbhi Nautiyal, Ms. Harshita Agarwal, Mr. Devesh Aswal and Ms. Vedika Singhvi, Advs. for R-2 CORAM: HON'BLE MR. JUSTICE C. HARI SHANKAR HON'BLE MR. JUSTICE AJAY DIGPAUL JUDGMENT % 06.10.2025 C. HARI SHANKAR, J. LPA 836/2023 Page 1 of 66 Signature Not Verified Digitally Signed By:AJIT KUMAR Signing Date:06.10.2025 11:25:33 Facilitative Index to the Judgment S. No. Subject Para Nos 1 Opening para 1 2 The lis 2–5 3 Facts 4 Details of subject invention 5 Objects of the invention 6.1 6 Background of the Invention 6.2 7 Summary of the Invention 6.3 8 Detailed Description of the Invention 6.4.1 – 6.4.5 9 Claims in the subject application 6.5 10 Reference to FER 7 11 Pre-grant opposition of CSIR 8.1 – 8.4 12 Response of appellant to objections of 9 CSIR 13 Findings of the AC 10 14 The Impugned Judgment 11 15 Prior Art Documents D1 and D2 16 Prior Art Document D1 – US Patent 13.1.1 – 13.1.2 0157945/2018 17 Prior art document D2 – “Guide for 13.2 Treatment of Distillery Effluents” issued by the BIS (IS:8032-1976) 18 Rival Contentions 14 – 15 19 Analysis 20 Opening para 16 21 Finding of AC re. novelty vis-à-vis finding 17.1 – 17.8 re. inventive step 22 (Miscellaneous paras) 18 – 19 23 Laconic fi